The function that has the given initial value and rate of change is: D. y = -1/2.
<h3>What is the Initial Value and Rate of Change of a Function?</h3>
A function is given as, y = mx + b, where, m is the rate of change, and b, which is a constant is the initial value.
Given the following:
b = -1/2
m = 0
Plug in the values into y = mx + b
y = 0(x) + (-1/2)
y = -1/2
Therefore, the function is: D. y = -1/2.
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